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SubjectRe: New filesystem for Linux
>>>> new method to keep data consistent in case of crashes (instead of
>>>> journaling),
>>> Your 32-bit transaction counter will overflow in the real world. It
>>> will take a setup with millions of transactions per second and even
>>> then not trigger for a few years, but when it hits your filesystem,
>>> the administrator of such a beast won't be happy at all. :)
>> If it overflows, it increases crash count instead. So really you have 2^47
>> transactions or 65536 crashes and 2^31 transactions between each crash.
> I am fully aware the counters are effectively 48-bit. If they were
> just 32-bit, you would likely have hit the problem yourself already.
> Jörn

Given the seek time 0.01s, 31-bit value would last for minimum time of 248
days when doing only syncs and nothing else. 47-bit value will last for
reasonably long.

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